PPT-Development of Latent Prints

Physical amp Chemical Techniques Latent Print Latent means hidden and the prints must be developed to make them usable and identifiable A chance impression caused by perspiration through the sweat pores on the friction ridges of the skin being transferred to another surface. 23 Dusting Dusting is the most effective way to obtain a print from a rigid non-porous surface such as glass, plastic, or metal surfaces. Using a camel hair brush, black carbon or aluminum Lip Prints History/Field. In 1970, the Japanese conducted a study to compare lip prints. A second study was done in 1991. The study of lip prints is called . cheiloscopy. Lip prints. Lips, like fingers, have special features that belong only to the individual making the print. “Fingerprints can not lie, . but liars can make fingerprints.”. —. Unknown. RECORDING PRINTS. rolling . inked prints. primary identification number. LIFTING PRINTS. Black. , white and fluorescent powder. Can any two people have the same fingerprint?. Basic Principles. According to criminal investigators, fingerprints follow 3 fundamental principles:. A fingerprint is an . individual. characteristic; no two people have been found with the . Can any two people have the same fingerprint?. Basic Principles. According to criminal investigators, fingerprints follow 3 fundamental principles:. A fingerprint is an . individual. characteristic; no two people have been found with the . What you Need to Know . (but may already know). History. Sir Edward Henry (of London Metropolitan Police) developed modern system of identifying criminals by their fingerprints in . 1900 . The Henry system (as it is sometimes known) was so useful in criminal investigations that it was adopted around the world. (aka- linocut prints). Ruth Hayes. Nii. . boi. . kotei. Ele. Willoughby. Olivia Clifton Bligh. Steve Prince. a. Identify and utilize appropriate techniques used to lift and evaluate readable, latent, plastic and visible fingerprints. . SFS2. Students will use various scientific techniques to analyze physical and trace evidence. . 2 Types of Crime-Scene Prints. 1. Visible Print- A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface.. 2. Plastic Print- A fingerprint impression in a soft surface.. “The Grains of truth” . Alec Smith. 05/09/2017. A Brief history… . . Photographic sensitivity is not restricted to silver chloride, silver bromide and silver iodide, but it is the most convenient and efficient system.. October . 23, 2015. Coleman A. Young Municipal Center. Detroit, MI. Capt. Greg Michaud. Michigan State Police. Forensic Science Division. “A PROUD tradition of SERVICE through EXCELLENCE, INTEGRITY and COURTESY.”. IAFIS classification. Automated fingerprint identification system. IAFIS classification. IAFIS (. I. ntegrated . A. utomated . F. ingerprint . I. dentification . S. ystem) designations, are based on fingerprint patterns. Latent Prints. Latent Fingerprints detection by physical and chemical techniques. Prepared By : Ms. Shruti Rajwar. Asst. Professor. . SoFS. , CUTM. Latent Prints. Latent means hidden.. Caused when friction ridges of the skin is pressed against another surface (due to the presence of sweat)..